The RES Group (Renewable Energy Systems) is a global renewable energy company which has been active in the renewable energy industry for over 30 years. Its core business is to develop, construct and operate large-scale, grid-connected renewable energy projects worldwide for commercial, industrial and utility clients’. RES is active in the wind (onshore and offshore wind) and solar energy sectors and is increasingly focussed on the transition to a low-carbon economy providing transmission, energy storage and demand side management expertise. Renewable Energy Systems was started in 1982 as part of the Sir Robert McAlpine group of engineering and construction companies. Its early years were spent in researching various designs for commercial wind turbines, including work on a vertical axis wind turbine (VAWT) model as well as the now more widely used horizontal axis (HAWT) units. The company built its first commercial wind farm at Carland Cross in Cornwall in 1992, using 15 Vestas turbines, each of 400 kW capacity. In December 1998, the first commercial 1MW wind turbine to be designed and built in the UK was installed by RES at Slievenahanaghan, Co Antrim. In 2001 the company built the then-largest wind farm in the world at King Mountain in Texas, using 214 Bonus turbines of 1.3 MW capacity. In 2005, RES won a Queens Award for Enterprise in the Sustainable Development category. More recently the company has been active in the developing offshore UK wind power market. It has supported the delivery of both onshore and offshore engineering works for the Lynn and Inner Dowsing offshore wind farms off the coast of Lincolnshire in the UK.